公开(公告)号：US20210408600A1

公开(公告)日：2021-12-30

申请号：US16770783

申请日：2019-12-24

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Hui CUI ,  Shuirong ZHANG ,  Chao TANG ,  Jianming ZHENG

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/131 ,  H01M4/525 ,  H01M4/66 ,  H01M50/491 ,  H01M50/417

Abstract: An electrolyte includes at least one of a compound of Formula I, a compound of Formula II or a compound of Formula III; and a compound of Formula IV; where, R11, R12, R13, R21, R22, R31, R32, R33 and R34 are independently selected from H, halo, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, and substituted or unsubstituted C6-C12 aryl; R41 and R44 are independently selected from H, F, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C12 aryl, Ra—(O—Rb), or (O—Rb); and R42 and R43 are independently selected from Rc—(O—Rd) or (O—Rd). Rb is selected from substituted or unsubstituted C1-C4 alkyl; Ra, Rc and Rd are independently selected from substituted or unsubstituted C1-C4 alkylene, C2-C5 alkenylene, or C6-C12 aryl.

公开(公告)号：US20210408595A1

公开(公告)日：2021-12-30

申请号：US16962777

申请日：2019-12-26

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Chao TANG ,  Junfei LIU ,  Lilan ZHANG ,  Jianming ZHENG

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  C07D327/00 ,  H01M4/36 ,  H01M4/583 ,  H01M4/133

Abstract: An electrochemical device including a positive electrode, a negative electrode and an electrolyte, wherein the negative electrode comprises a negative electrode active material layer, including a negative electrode active material, wherein the negative electrode active material includes a silicon-containing compound; and the negative electrode active material further includes, on the surface, a protective layer including a compound having an S═O bond.